C1111233131211111211113313331333133313331313221131211111121211131   >>    C111123313121111121111331333133313331333131322113121111112121113   <<    C1111233131211111211113313331333133313331313221131211111121211133   >>      C1111233131211111211113313331333133313331313221131211111121211132   >>