In a certain coding system, 'special mention serve' is

Solution

I. 'special mention serve' is coded as 'swd vbd ghj'.

II. 'crowd final mention' is coded as 'asw thn vbd'.

III. 'final match serve' is coded as 'rad asw ghj'.

After decoding the codes, we get:

From statement I and II, we get 'mention' is coded as 'vbd'.

From statement I and III, we get 'serve' is coded as 'ghj'.

From statement I alone, we get 'special' is coded as 'swd'.

From statement II and III, we get 'final' is coded as 'asw'.

From statement II alone, we get 'crowd' is coded as 'thn'.

From statement III alone, we get 'match' is coded as 'rad'.

Therefore, 'special crowd' is coded as 'thn swd'.