C11111333133313232233133313331333133313231312111133131133132222233313331313221   >>    C1111133313331323223313331333133313331323131211113313113313222223331333131322   <<    C11111333133313232233133313331333133313231312111133131133132222233313331313223   >>      C11111333133313232233133313331333133313231312111133131133132222233313331313222   >>