output.csv

13
a
b
c
d
g
h
a,b
a,c
a,d
b,d
c,d
g,h
a,b,d
7
b,=>,a
b,=>,d
g,=>,h
b,=>,a,d
a,b,=>,d
a,d,=>,b
b,d,=>,a