Only thing - the groups of boxes led me to understand each group was for a single three-letter combination.
As each group is in fact for all countries with the same (single) initial, perhaps a column header for each group with 'A', 'B', 'C' etc would remove doubt?
Fared quite bad (29)
Thanks!
Only thing - the groups of boxes led me to understand each group was for a single three-letter combination.
As each group is in fact for all countries with the same (single) initial, perhaps a column header for each group with 'A', 'B', 'C' etc would remove doubt?