C1111233131211111211113313331333133313331333133313331333121111331322121112221   >>    C111123313121111121111331333133313331333133313331333133312111133132212111222   <<    C1111233131211111211113313331333133313331333133313331333121111331322121112223   >>      C1111233131211111211113313331333133313331333133313331333121111331322121112222   >>