C1111233131211111211113313331333133313221211113313331333133313231121133131111   >>    C111123313121111121111331333133313331322121111331333133313331323112113313111   <<    C1111233131211111211113313331333133313221211113313331333133313231121133131113   >>      C1111233131211111211113313331333133313221211113313331333133313231121133131112   >>