Series Completion Alphabet Series

There is a gap of four letters between the first and second, the second and third letters of each term, and also between the last letter of a term and the first letter of the next term.

The series may be divided into groups as shown:

b e d / f ? h / j ? l

Clearly in the first group, the second and third letters are respectively three and two steps ahead of the first letter.

A similar pattern would follow in the second and third groups.

There is a gap of one letter between both the letters of first term, a gap of two letters between both the letters of second term and again a gap of one and two letters between the letters of third and fourth terms respectively.

Beside, the last letter of each term and the first letter of next term are in alphabetical order.

The first letters of the terms are in alphabetical order, and so are the second and third letters.

The letters in each term are consecutive.

There is a gap of one letter between the last letter of the first term and the first letter of the second term and a gap of two letters between the last letter of the second term and the first letter of third term.

So, there would be a gap of three letters between the last letter of the third term and the first letter of the fourth term.

The first letters in odd numbered terms from series J, I, H and in even numbered terms from the series K, L, M.

The sequence followed by the numbers is + 2, + 3, + 4, + 5, + 6.

The third letter of each term is moved two steps backward to obtain the third letter of the next term.

The first letter of each term is moved two steps backward and the second letter is moved three steps forward to obtain the corresponding letters of the next term.

The number in each term is 3 more than that in the preceding term.