xuzr1s yuzr zuzr1 0uzr1s 1uzr
ml0r nl0r1 ol0r1s pl0r ql0r1
bc1r1 cc1r1s dc1r ec1r1 fc1r1s
021r1s 121r 221r1 321r1s 421r
pt2r qt2r1 rt2r1s st2r tt2r1