C11111333133313232233133313331333133313231312111133132212111113331333223121   >>    C1111133313331323223313331333133313331323131211113313221211111333133322312   <<    C11111333133313232233133313331333133313231312111133132212111113331333223123   >>      C11111333133313232233133313331333133313231312111133132212111113331333223122   >>