‘2 4 5’ - depends mass to’……. (i) ‘5 1 8’ - to revolves circular’ ……. (ii) ‘4 7 6’ – ‘path mass zero’….. (iii) From (i) and (iii), code for ‘mass’ is ‘4’. From (i) and (ii), code for ‘to’ is ‘5’. We know the code for ‘mass’ and ‘to’, so from (i), ‘2’ is the code for ‘depends’.