C1111233131211111211113313331333133313331313221131211111121133232131   >>    C111123313121111121111331333133313331333131322113121111112113323213   <<    C1111233131211111211113313331333133313331313221131211111121133232133   >>      C1111233131211111211113313331333133313331313221131211111121133232132   >>