C312312111133131212111133133313331322331323223313231333132333112121   >>    C31231211113313121211113313331333132233132322331323133313233311212   <<    C312312111133131212111133133313331322331323223313231333132333112123   >>      C312312111133131212111133133313331322331323223313231333132333112122   >>