C11111333133313232233133313331333133313331312111133133112133321   >>    C1111133313331323223313331333133313331333131211113313311213332   <<    C11111333133313232233133313331333133313331312111133133112133323   >>      C11111333133313232233133313331333133313331312111133133112133322   >>