C313131323331311331322331322331311211331323331322331323133313231313233231   >>    C31313132333131133132233132233131121133132333132233132313331323131323323   <<    C313131323331311331322331322331311211331323331322331323133313231313233233   >>      C313131323331311331322331322331311211331323331322331323133313231313233232   >>