C11111333133313232233133313331333133313331313331333131122112121   >>    C1111133313331323223313331333133313331333131333133313112211212   <<    C11111333133313232233133313331333133313331313331333131122112123   >>      C11111333133313232233133313331333133313331313331333131122112122   >>