C11111333133313232233133313331333133313331312111133133312111133132212321   >>    C1111133313331323223313331333133313331333131211113313331211113313221232   <<    C11111333133313232233133313331333133313331312111133133312111133132212323   >>      C11111333133313232233133313331333133313331312111133133312111133132212322   >>