C1111233131211111211113313331333133313232321333133313331311321312231   >>    C111123313121111121111331333133313331323232133313331333131132131223   <<    C1111233131211111211113313331333133313232321333133313331311321312233   >>      C1111233131211111211113313331333133313232321333133313331311321312232   >>