ABC's of Crocheting

A:
alt = alternate
approx = approximately

B:
beg = begin(ning)
bet = between
BL/bk lp = back loop(s)
BLO = back loop only
bo = bobble
BP = back post
BPdc = back post double crochet(s)
BPsc = back post single crochet(s)
BPtr = back post triple crochet(s)

C:
CA = color A
CB = color B
CC = contrasting color
ch(s) = chain(s)
ch- = refers to chain previously made/worked
ch-sp = chain space
CL(s) =cluster(s)
cm = centimeter
cont = continue