C1111233131211111211113313331333133313221211113313331333133313223313112131   >>    C111123313121111121111331333133313331322121111331333133313331322331311213   <<    C1111233131211111211113313331333133313221211113313331333133313223313112133   >>      C1111233131211111211113313331333133313221211113313331333133313223313112132   >>