C312312111133113313231333133313331333133313331333133313112113313131   >>    C31231211113311331323133313331333133313331333133313331311211331313   <<    C312312111133113313231333133313331333133313331333133313112113313133   >>      C312312111133113313231333133313331333133313331333133313112113313132   >>