C12313211232233312111111312111133133313331323133322233121322121322321   >>    C1231321123223331211111131211113313331333132313332223312132212132232   <<    C12313211232233312111111312111133133313331323133322233121322121322323   >>      C12313211232233312111111312111133133313331323133322233121322121322322   >>