C11111333133313232233133313331333132313331323321313331312111133112133313231231   >>    C1111133313331323223313331333133313231333132332131333131211113311213331323123   <<    C11111333133313232233133313331333132313331323321313331312111133112133313231233   >>      C11111333133313232233133313331333132313331323321313331312111133112133313231232   >>