C11111333133313232233133313331333133313221333133313232212111133132321123231   >>    C1111133313331323223313331333133313331322133313331323221211113313232112323   <<    C11111333133313232233133313331333133313221333133313232212111133132321123233   >>      C11111333133313232233133313331333133313221333133313232212111133132321123232   >>