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The pineapple bobble pattern is based on 16 chains + 7 for your foundation chain.  That means if you want 3 repeats of the pineapple bobble pattern you would multiply 16 X 3 = 48 + 7 = 55.  So your based chain would be 55 chains long.

The pattern uses single crochet, chain, double crochet and the bobble stitch which is make 4 double crocht in same st leaving last loop of each double crochet on your hook (there should be five loops) yo and pull through all loops on hook.
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