C1111233131211111211113313331333133313331322322331333132112323331221   >>    C111123313121111121111331333133313331333132232233133313211232333122   <<    C1111233131211111211113313331333133313331322322331333132112323331223   >>      C1111233131211111211113313331333133313331322322331333132112323331222   >>