C12313211232233312111111312111133133313331323133313332221331212112332233233221   >>    C1231321123223331211111131211113313331333132313331333222133121211233223323322   <<    C12313211232233312111111312111133133313331323133313332221331212112332233233223   >>      C12313211232233312111111312111133133313331323133313332221331212112332233233222   >>