C31231211111133131211113313331333133313331323223313331333133313112113313231211   >>    C3123121111113313121111331333133313331333132322331333133313331311211331323121   <<    C31231211111133131211113313331333133313331323223313331333133313112113313231213   >>      C31231211111133131211113313331333133313331323223313331333133313112113313231212   >>