Suggest sequence of 4 reagents in order, from list given below to carry out following conversion strictly in four steps:

                    $\mathrm{Ph}-\mathrm{CH}=\mathrm{CH}-\mathrm{Ph}⟶{\mathrm{PhNH}}_2$

(1) Ammonical ${\mathrm{AgNO}}_3$ (2) $\mathrm{HIO}4 ,∆$

(3) ${\mathrm{HN}}_{3,} {\mathrm{H}}_2{\mathrm{SO}}_4 ,∆$  (4) $\stackrel{\oplus }{\mathrm{H}}, {\mathrm{KMnO}}_4,∆$

 (5) Fehling solution     (6) $\mathrm{KOH}< {\mathrm{Br}}_2$

 (7) ${\mathrm{CF}}_3{\mathrm{CO}}_3\mathrm{H}$             (8) Bayer's reagent