C1111133313331323223313331333133313331323131211113312111133223211231   >>    C111113331333132322331333133313331333132313121111331211113322321123   <<    C1111133313331323223313331333133313331323131211113312111133223211233   >>      C1111133313331323223313331333133313331323131211113312111133223211232   >>