C1111233131211111211113313331333133313331322322331312111113311232221   >>    C111123313121111121111331333133313331333132232233131211111331123222   <<    C1111233131211111211113313331333133313331322322331312111113311232223   >>      C1111233131211111211113313331333133313331322322331312111113311232222   >>