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A

alt = alternate
approx = approximately

B

beg = begin or beginning
bet = between
bl = back loop
blo = back loop only
bp = back post
bpdc = back post double crochet
bpsc = back post single crochet
bptr = back post triple crochet

C

CA = color A
CB = color B
ch = chain
ch-sp = chain space
cl =cluster
cm = centimeter
cont = continue

D

dc = double crochet
dc2tog = double crochet 2 stitches together
dec = decrease
dtr = double treble crochet

E

ea = each
est = established

F

fl = front loop
flo = front loop only
fp = front post
fpdc = front post double crochet
fpsc[/fp] = front post single crochet
fptr = front post treble crochet

G

g = grams

H

hdc = half double crochet
hk = hook

I

inc = increase
inv dec = invisible decrease

L

lp = loop

M

MC = main color
m = meters
mm = millimeters
mr = make ring or magic ring

O

oz = ounces

P

pc = popcorn
prev = previous

R

rem = remaining
rep = repeat
rev sc = reverse single crochet
rnd = round
RS = right side

S

sc = single crochet
sc2tog = single crochet 2 stitches together
sk = skip
sl st = slip stitch
sp = space
st = stitch

T

tog = together
trc = treble crochet
trtrc = triple treble crochet

W

WS = wrong side

Y

yd = yards
yo = yarn over