Which of the following groups of letters when sequentially placed from left to right will complete the given series?
dddeeeff_dddeeeff_dddeeefffdddee_ff_
1
fdef
2
fded
3
ffef
4
edfd
Which of the following groups of letters when sequentially placed from left to right will complete the given series?
dddeeeff_dddeeeff_dddeeefffdddee_ff_