SRRRRR
SRRRRD
SRRRDR
SRRRDD
SRRRDL
SRRDRR
SRRDRD
SRRDRU
SRRDDR
SRRDDL
SRRDLD
SRRDLL
SRDRRD
SRDRRU
SRDRDR
SRDRDL
SRDRUR
SRDDRU
SRDDDR
SRDDDL
SRDDLU
SRDLDR
Snakes count = 22