C312312111133131212111133133313231333132311331333133313233233232321   >>    C31231211113313121211113313331323133313231133133313331323323323232   <<    C312312111133131212111133133313231333132311331333133313233233232323   >>      C312312111133131212111133133313231333132311331333133313233233232322   >>