3 4 3 4 2 3 1 2 1-------- 1---- 1-------- 3 2 3 1 3 1 2 1------- 1------ 1------ 3 1 2 4 1 2 1 1 3 3 1----- 3 4 1 2 4 3 2 1 1--- 1---- 3 1 1----- 3 2 2------ 3 1 2 1 3 3------ 3 1----------- 3 2----------- 3 1 2 1----------- 1----- 1 3---------- 3 1 3 1 2 3 3 1 3 2 1 3 3 3 1 3 1 2 3 3 1 3 1 3 1 3------------- 1 3 3------------- 1 3 1 3------- 1 3 1 3------------- 1-------- 4 1------------- 1 2 1 2 1------------------- 2 1 3 1 3----------- 1 3 3---------- 1 3------ 1 3 1----------- 3 1--------------------- 3 1 4 2 1 4 2 1 2 1 3 2---------- 4------------- 2 1 2 1---------------- 3-------------------------- 1 3 2----------- 4-------------- 2 1 2 1 1------------------ 3---------------------- 1------------------ 2 1 4 2 1 4 2 1 2 1 4 2 1 4 2 1 2 1 4 2 1 4 2 1 2 1 4 1 4 3 1 4 1 4 3 1 3 1 4 2 3 1 3 1 3 3 1 4 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 3 1 3 1 3 1 3 1 3 1 3 1 3 1 1 3 1 4 1 3 1 3------------- 1 3 1 3----------- 1 3----------- 1 3 3 3 1 3 1 3 3 1 3 1 4 1---------------- 3 3 2 1 1 4 1 2 3 2 1 1 4 1 4 1 2 1 3 4 2 1 4 1 1 4 1 2 1 3 4 4 1 4 1 4 1 2 1 4 1 4 1 4 1 3 2 2 3 1 3 1 1 3 4 2 1 2 1--------- 3 3----------- 1-------- 4----------- 3-------------- 1------------- 4-------------- 3-------------- 4--------------- 1 3 1 3------------- 1 3 2 1 3 1 3 1 3 1 3 3------------------------ 1 3 1--------------------- 3--------------- 2 1 2 1 1----------- 3------------------ 1 3 1------------------- 3------------------ 2 1 2 1 2 1 3 1 4 1 4 1 3 2 3 1----- 3 1 3 1 2 1 2 4 1 2 1 3 1 4 2 1 2 1 2 1 3 1 3 4 2 1 2 4 1--------------- 3 1------ 4 1 1-------- 4 1------ 3 2 4 2 4 2 1 2 1 2 1 2 1 4 3 4 1 2 1 3 1 3 1 4 3 4 3 1 1 3 1 3 1--------- 3 1 3 4 3 4 1 4 1 3 1----- 3 1 3 4 3 4 1 4 1 3 1------ 2 1 2 4 1------ 2 4 1 2 4----------------------------------- 1 3 3 3 1 3 3--------------------------------