Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it.
H _ H _ _ _ I J K _ I _ _ _ H1
H I J L K M N N
2
I H I J K K L L
3
I I J J H H J K
4
I I J H H J K L
Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it.
H _ H _ _ _ I J K _ I _ _ _ H