C11111211113313112113313331333133313331333132212111133133313331333131323113221   >>    C1111121111331311211331333133313331333133313221211113313331333133313132311322   <<    C11111211113313112113313331333133313331333132212111133133313331333131323113223   >>      C11111211113313112113313331333133313331333132212111133133313331333131323113222   >>