C312312111133113313231333133313331333133311211331323223311233131   >>    C31231211113311331323133313331333133313331121133132322331123313   <<    C312312111133113313231333133313331333133311211331323223311233133   >>      C312312111133113313231333133313331333133311211331323223311233132   >>