Using yarn A, cast-on 2 sts. and work 4 r. rib 1/1. At the end of 4th r., do not turn but pick-up 6 sts. along the long side, turn.

Setting row: p1, k1, PM, k4, PM, k1, p1 (the 2 Ms mark the first and last 2 sts. of the r., then, across every next r., always move the 2 Ms upwards, even if not stated in the instruction)

1st r. (RS): slip 1 k-wise, p1, 1 incr. in each st. until the M, p1, k1 [12 sts.]

2nd r. (WS): slip 1 p-wise, k1, knit until the M, k1, p1

3rd r. (RS): slip 1 k-wise, p1, knit until the M, p1, k1

4th r. (WS): slip 1 p-wise, k1, knit until the M, k1, p1

5th r.: slip 1 k-wise, p1, 1 incr. in each st. until the M, p1, k1 [20 sts.]

From 6th to 9th r.: rep. the 2nd and 3rd r.

10th r.: slip 1 p-wise, k1, (k1, yo) rep. until the M, k1, p1 [36 sts.]

From 11th to 18th r.: rep. the 3rd and 4th r.

19th r.: rep. the 3rd r.

20th r.: slip 1 p-wise, k1, (k1, yo) rep. until the M, k1, p1 [68 sts.]

From 21st to 24th r.: rep. the 3rd and 4th r.

Use yarn B.

25th r.: slip 1 k-wise, p1, (slip 1 with yarn in back, k1) rep. until the M, p1, k1

26th r.: slip 1 p-wise, k1, (k1, slip 1 with yarn in front) rep. until the M, k1, p1

Use A.

27th r.: rep. the 3rd r.

28th r.: rep. the 4th r.

Use yarn B.

29th r.: slip 1 k-wise, p1, (k1, slip 1 with yarn in back) rep. until the M, p1, k1

30th r.: slip 1 p-wise, k1, (slip 1 with yarn in front, k1) rep. until the M, k1, p1

Use yarn A.

31st r.: rep. the 3rd r.

32nd r.: rep. the 4th r.

Use yarn B.

33rd r.: rep. the 25th r.

34th r.: rep. the 26th r.

Cut the yarn B.

Use yarn A.

From 35th to 38th r.: rep. the 3rd and 4th r.

39th r.: rep. the 3rd r.

40th r.: slip 1 p-wise, k1, (k1, yo) rep. until the M, k1, p1 [132 sts.]

41st r.: rep. the 3rd r.

42nd r.: rep. the 4th r.

Use yarn B.

43rd r.: rep. the 25th r.

44th r.: rep. the 26th r.

Cut the yarn B.

Use yarn A.

45th r.: rep. the 3rd r.

46th r. (RS): slip 1 p-wise, k1, purl until the M, k1, p1

47th r.: slip 1 k-wise, p1, k1, (slip 3 sts. with yarn in front, k3) rep. until the st. before the M, k1, p1, k1

48th r.: slip 1 p-wise, k1, (p3, slip 3 sts. with yarn in back) rep. until 2 sts. before the M, p2, k1, p1

49th r.: slip 1 k-wise, p1, (k3, slip 3 sts. with yarn in front) rep. until 2 sts. before the M, k2, p1, k1

50th r.: slip 1 p-wise, k1, p1, (slip 3 sts. with yarn in back, p3) rep. until 1 st. before the M, p1, k1, p1

51st r.: slip 1 k-wise, p1, slip 2 sts. with yarn in front, (k3., slip 3 sts. with yarn in front) rep. until the M, p1, k1

52nd r.: slip 1 p-wise., k1, slip 2 sts. with yarn in back, (p3, slip 3 sts. with yarn in back) rep. until the M, k1, p1

From 53rd to 56th r.: rep. from 47th to 50th r.

57th r.: rep. the 49th r.

58th r.: rep. the 48th r.

59th r.: rep. the 47th r.

60th r.: rep. the 52nd r.

61st r.: rep. the 51st r.

62nd r.: rep. the 50th r.

63rd r.: rep. the 49th r.

64th r.: rep. the 48th r.

65th r.: rep. the 47th r.

66th r.: slip 1 p-wise, k1, purl until the M, k1, p1

Use the yarn B.

67th r.: rep. the 25th r.

68th r.: rep. the 26th r.

Cut the yarn B.

Use the yarn A.

From 69th to 70th r.: rep. the 3rd e 4th r.

71st r.: slip 1 k-wise, p1, (k2tog, yo) rep. until the M, p1, k1, p1

From 72nd to 78th r.: rep. the 3rd and 4th r.

79th r.: rep. the 3rd r.

80th r.: slip 1 p-wise, k1, (k1, yo) rep. until the M, k1, p1 [260 sts.]

From 81st to 84th r.: rep. the 3rd and 4th r.

Use yarn B.

85th r.: rep. the 25th r.

86th r.: rep. the 26th r.

Use yarn A.

87th r.: rep. the 3rd r.

88th r.: rep. the 4th r.

Use yarn B.

89th r.: rep. the 29th r.

90th r.: rep. the 30th r.

Use yarn A.

91st r.: rep. the 3rd r.

92nd r.: rep. the 4th r.

From 93rd to 108th r.: rep. From 85th to 92nd r. twice more, alternating the colours. At the end, cut the yarn B.

Use yarn A.

109th r.: rep. the 3rd r.

110th r.: slip 1 p-wise, k1, (k2tog, yo) rep. until the M, k1, p1

111th r.: rep. the 3rd r.

112th r.: rep. the 4th r.

Use yarn B.

113th r.: rep. the 25th r.

114th r.: rep. the 26th r.

Cut the yarn B.

Use yarn A.

115th r.: rep. the 3rd r.

116th r.: slip 1 p-wise, k1, purl until the M, k1, p1

117th r.: slip 1 k-wise, p1, k1, (slip 3 sts. with yarn in front, k3.) rep. until 3 sts. before the M, slip 3 sts. with yarn in front, p1, k1

118th r.: slip 1 p-wise, k1, slip 2 sts. with yarn in back, (p3, slip 3 sts. with yarn in back) rep. until 2 sts. before the M, p2, k1, p1

119th r.: slip 1 k-wise, p1, (k3., slip 3 sts. with yarn in front) rep. until 4 sts. before the M, k4, p1, k1

120th r.: slip 1 p-wise, k1, (p3, slip 3 sts. with yarn in back) rep. until 4 sts. before the M, p4, k1, p1

121st r.: slip 1 k-wise, p1, slip 2 sts. with yarn in front, (k3., slip 3 sts. with yarn in front) rep. until 2 sts. before the M, k2, p1, k1

122nd r.: slip 1 p-wise, k1, p1, (slip 3 sts. with yarn in back, p3) rep. until the M, k1, p1

123rd r.: rep. the 117th r.

124th r.: rep. the 118th r.

125th r.: rep. the 119th r.

126th r.: rep. the 120th r.

127th r.: rep. the 119th r.

128th r.: rep. the 118th r.

129th r.: rep. the 117th r.

130th r.: rep. the 122nd r.

131st r.: rep. the 121st r.

132nd r.: rep. the 120th r.

133rd r.: rep. the 119th r.

134th r.: rep. the 118th r.

135th r.: rep. the 117th r.

136th r.: rep. the 122nd r.

137th r.: slip 1 k-wise, p1, knit until the M, p1, k1

138th r.: slip 1 p-wise, k1, purl until the M, k1, p1

Use yarn B.

139th r.: rep. the 25th r.

140th r.: rep. the 26th r.

Cut the yarn B.

Use yarn A.

141st r.: slip 1 k-wise, p1, knit until the M, p1, k1

142nd r.: slip 1 p-wise, k1, knit until the M, k1, p1

143rd r.: slip 1 k-wise, p1, (2 sts. ins. a dir., yo) rep. until the M, p1, k1

144th r.: rep. the 4th r.

From 145th to 150th r.: rep. the 3rd and 4th r.

151st r.: slip 1 k-wise, p1, (k2tog, yo) 7 times, (k1, yo) 16 times, k2tog, yo, p1, k1 [276 sts.]

152nd r.: rep. the 4th r.

Use yarn B.

153rd r.: rep. the 29th r.

154th r.: rep. the 30th r.

Use yarn A.

155th r.: rep. the 3rd r.

156th r.: rep. the 4th r.

From 157 to 168th r.: rep. from 153rd r. to 156th r. 3 times more, alternating the colours.

Use yarn B

169th r.: bind off the sts. loosely.