The letters of the word ‘SURITI’ are written in all possible ways and these words are written out ‘S’ in a dictionary ; the rank of the words SURITI is

Initial letter (s)                     Number of words

$\text{I}\times \times \times \times \times$                                   $\overline{)5}=120$

$\text{R}\times \times \times \times \times$                                 $\frac{\overline{)5}}{\overline{)2}}=60$

$\text{RI}\times \times \times \times$                                    $\overline{)4}=24$

$\text{SR}\times \times \times \times$                                 $\frac{\overline{)4}}{\overline{)2}}=12$

$\text{ST}\times \times \times \times$                                  $\frac{\overline{)4}}{\overline{)2}}=12$

$\text{SUI}\times \times \times$                                      $\overline{)3}=6$  

$\therefore$  SURIIT is 235 ^th word

And  SURITI is 236 ^th word.