C3R1U1S1T1
7 points
CRUST is validvalid
to form a hardened outer surface on [v CRUSTED, CRUSTING, CRUSTS]
to form a hardened outer surface [v -ED, -ING, -S]
to form a hardened outer surface on [v CRUSTED, CRUSTING, CRUSTS]
to form a hardened outer surface [v -ED, -ING, -S]