C1111133313331323223313331333133313331333131211113313331323211231231   >>    C111113331333132322331333133313331333133313121111331333132321123123   <<    C1111133313331323223313331333133313331333131211113313331323211231233   >>      C1111133313331323223313331333133313331333131211113313331323211231232   >>