C1111233131211111211113313331333133313331333133313331333133313222133121   >>    C111123313121111121111331333133313331333133313331333133313331322213312   <<    C1111233131211111211113313331333133313331333133313331333133313222133123   >>      C1111233131211111211113313331333133313331333133313331333133313222133122   >>