C1111233131211111211113313331333133313232313331333131323132232321   >>    C111123313121111121111331333133313331323231333133313132313223232   <<    C1111233131211111211113313331333133313232313331333131323132232323   >>      C1111233131211111211113313331333133313232313331333131323132232322   >>