C312312111133131212111133133313231333133313331333133311211331322132231   >>    C31231211113313121211113313331323133313331333133313331121133132213223   <<    C312312111133131212111133133313231333133313331333133311211331322132233   >>      C312312111133131212111133133313231333133313331333133311211331322132232   >>