C111123313121111121111331333133313331333131333133313331333133322233221   >>    C11112331312111112111133133313331333133313133313331333133313332223322   <<    C111123313121111121111331333133313331333131333133313331333133322233223   >>      C111123313121111121111331333133313331333131333133313331333133322233222   >>