C1111233131211111211113313331333133313331313331333133313331333221232333131   >>    C111123313121111121111331333133313331333131333133313331333133322123233313   <<    C1111233131211111211113313331333133313331313331333133313331333221232333133   >>      C1111233131211111211113313331333133313331313331333133313331333221232333132   >>