C1111233131211111211113313331333133313221211113313331333133313223313221   >>    C111123313121111121111331333133313331322121111331333133313331322331322   <<    C1111233131211111211113313331333133313221211113313331333133313223313223   >>      C1111233131211111211113313331333133313221211113313331333133313223313222   >>