starting 0 letter a
length 0 new a start of new 
mid a
starting 1 letter b
length 1 new b start of new a
it 1
mid bab
starting 2 letter c
length 3 new c start of new bab
it 1
it 2
it 3
mid cbcacbc
starting 3 letter d
length 7 new d start of new cbcacbc
it 1
it 2
it 3
it 4
it 5
it 6
it 7
mid dcdbdcdadcdbdcd
starting 4 letter e
length 15 new e start of new dcdbdcdadcdbdcd
it 1
it 2
it 3
it 4
it 5
it 6
it 7
it 8
it 9
it 10
it 11
it 12
it 13
it 14
it 15
mid edecedebedecedeaedecedebedecede
starting 5 letter f
length 31 new f start of new edecedebedecedeaedecedebedecede
it 1
it 2
it 3
it 4
it 5
it 6
it 7
it 8
it 9
it 10
it 11
it 12
it 13
it 14
it 15
it 16
it 17
it 18
it 19
it 20
it 21
it 22
it 23
it 24
it 25
it 26
it 27
it 28
it 29
it 30
it 31
mid fefdfefcfefdfefbfefdfefcfefdfefafefdfefcfefdfefbfefdfefcfefdfef
fefdfefcfefdfefbfefdfefcfefdfefafefdfefcfefdfefbfefdfefcfefdfef