C12313211232233312111111312111133133313331323133313331122332321132311321123231   >>    C1231321123223331211111131211113313331333132313331333112233232113231132112323   <<    C12313211232233312111111312111133133313331323133313331122332321132311321123233   >>      C12313211232233312111111312111133133313331323133313331122332321132311321123232   >>