C11111333133313232233133313331333132313331323321313331312111133132213211231   >>    C1111133313331323223313331333133313231333132332131333131211113313221321123   <<    C11111333133313232233133313331333132313331323321313331312111133132213211233   >>      C11111333133313232233133313331333132313331323321313331312111133132213211232   >>