C12121212311232322331313232233132313331323221133132313331323111   >>    C1212121231123232233131323223313231333132322113313231333132311   <<    C12121212311232322331313232233132313331323221133132313331323113   >>      C12121212311232322331313232233132313331323221133132313331323112   >>