C1111233131211111211113313331333133313221211113313331333133313112113113221   >>    C111123313121111121111331333133313331322121111331333133313331311211311322   <<    C1111233131211111211113313331333133313221211113313331333133313112113113223   >>      C1111233131211111211113313331333133313221211113313331333133313112113113222   >>