C11111211113313112113313331333132313331322121111133313221123331   >>    C1111121111331311211331333133313231333132212111113331322112333   <<    C11111211113313112113313331333132313331322121111133313221123333   >>      C11111211113313112113313331333132313331322121111133313221123332   >>