Ligatures is the next big stage, after all symbols are copied to FontLab and preliminary kerning is set. Some letters, especially those with ascenders and discenders won’t look good. In my case it was combinations like ‘ff’, ‘fi’, ‘ll’, ‘Ly’ etc. So far I’ve discovered 17 letter combinations that required special treatment. So I’ve created 17 new symbols and inserted them in OpenType liga function.