C L O G
clog
C R I B
crib
C R A B
crab
F L A P
flap
CH U G
chug
B L A CK
black
B E N T
bent
F L I CK
flick
C R A CK
crack
S L U G
slug
M E N D
mend
B L O CK
block
P L U G
plug
B L I P
blip
F R O G
frog
CH E CK
check