I have thi sheet and 2 column
AAAAA 123456
AAAAA 128456
AAAAA 123457
BBBBB 123456
BBBBB 128863
BBBBB 129226
CCCCC 234556
i need to loop all cells into sheet and fill a dictionary in this mode:
AAAAA not exists add, AAAAA and related value 123456
AAAAA just exists, add 128456 to the already exists combination
ecc
to the and of cell loop the dictionary filled

