:1 9 35 91 189 ()
A.361
B.341
C.321
D.301
1,9,35,91,189,()A.301 B.321 C.341 D.361
1,9,35,91,189,()A361 B341 C321 D301
1,9,35,91,189,()A.301B.321C.341D.361
1,9,35,91,189,() A.301 B.321 C.341 D.361
193591189 () A.361B.341C.321D.301