Tr/fpdctog – Treble and front post double crochet together – yo twice, insert hook into FLO of st 2 behind and 1 round below next, yo and pull through, [yo and pull through 2 loops] twice, yo, insert hook behind fphtr from 2 rounds below, yo and pull through, yo and pull through 2 loops, yo and pull through remaining 3 loops
Dc/tr2tog – double crochet and treble crochet together – yo, insert hook behind 2nd htr from 2 rounds below, yo and pull through 2 loops, yo twice, insert hook in FLO of st 2 ahead and 1 round below, yo and pull through, [yo and pull through 2 loops] twice, yo and pull through remaining 3 loops
Dcbb – double crochet behind and below – double crochet into stitch directly behind and one round below the next stitch
Fphtr-2a-2b – Front post half treble around st 2 ahead and 2 rounds below
Fphtr-2b-2b – Front post half treble around st 2 behind and 2 rounds below