C1111233131211111211113313331333133313331333133313331333133313232212232321   >>    C111123313121111121111331333133313331333133313331333133313331323221223232   <<    C1111233131211111211113313331333133313331333133313331333133313232212232323   >>      C1111233131211111211113313331333133313331333133313331333133313232212232322   >>