C1111133313331323223313331333133313113313231331121211111133132231221   >>    C111113331333132322331333133313331311331323133112121111113313223122   <<    C1111133313331323223313331333133313113313231331121211111133132231223   >>      C1111133313331323223313331333133313113313231331121211111133132231222   >>