C11111333133313232233133313331333133112111112113313133313231232322111   >>    C1111133313331323223313331333133313311211111211331313331323123232211   <<    C11111333133313232233133313331333133112111112113313133313231232322113   >>      C11111333133313232233133313331333133112111112113313133313231232322112   >>