Use 4ply washable yarn and size 3.5 mm crcohet hook.
Make 80 chain
1st row. 1 tr. into 4th ch, and next 6 ch. (1 ch. miss 1 ch. 1 tr. into each of next 7 ch) to end of row. 3ch to turn.
2nd row. 1 tr. into each tr. Ch. over ch. to end.
Repeat 2nd row 3 times.
6th row. *1ch. miss 1 tr. tr into next tr.* to end.
This makes a row of blocks. Work more rows of blocks in same way until desired length.
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