C12313211232233312111111312111133133313331323133313332322321121213232321   >>    C1231321123223331211111131211113313331333132313331333232232112121323232   <<    C12313211232233312111111312111133133313331323133313332322321121213232323   >>      C12313211232233312111111312111133133313331323133313332322321121213232322   >>