It's not that difficult. The names are different but they "make sense". It's like 'fifteen', 'sixteen' and 'seventeen' stretched up to 100. Different names, but

It's not that difficult. The names are different but they "make sense". It's like 'fifteen', 'sixteen' and 'seventeen' stretched up to 100. Different names, but the pattern is sort of obvious with a few exceptions here and there.