C1111133313331323223313331333133313331333131211111323133313231231   >>    C111113331333132322331333133313331333133313121111132313331323123   <<    C1111133313331323223313331333133313331333131211111323133313231233   >>      C1111133313331323223313331333133313331333131211111323133313231232   >>