---------------------
---------------------
gbrbgggggbrbgggggbrbg
--r-------r-------r--
-bkb-----bkb-----bkb-
gkkkg----kkk----gkkkg
kkkkkg---kkk---gkkkkk
kkkkkkgggkkkgggkkkkkk
kkkkkkkkkkkkkkkkkkkkk
20 6
0
