C1111233131211111211113313331333133313331311211331333133313331322123232331   >>    C111123313121111121111331333133313331333131121133133313331333132212323233   <<    C1111233131211111211113313331333133313331311211331333133313331322123232333   >>      C1111233131211111211113313331333133313331311211331333133313331322123232332   >>