C313131323331311331322331322331311211331323331322331323133312121   >>    C31313132333131133132233132233131121133132333132233132313331212   <<    C313131323331311331322331322331311211331323331322331323133312123   >>      C313131323331311331322331322331311211331323331322331323133312122   >>