CREATE_LIST
IS_EMPTY
SIZE
PUSH_FRONT 0
IS_EMPTY
FRONT
SIZE
PUSH_FRONT 1
IS_EMPTY
FRONT
SIZE
PUSH_FRONT 2
IS_EMPTY
FRONT
SIZE
PUSH_FRONT 3
IS_EMPTY
FRONT
SIZE
POP_FRONT
FRONT
SIZE
POP_FRONT
FRONT
SIZE
POP_FRONT
FRONT
SIZE
POP_FRONT
IS_EMPTY
SIZE
