C1111233131211111211113313331333133313331333133313331333133313331322221311321   >>    C111123313121111121111331333133313331333133313331333133313331333132222131132   <<    C1111233131211111211113313331333133313331333133313331333133313331322221311323   >>      C1111233131211111211113313331333133313331333133313331333133313331322221311322   >>