As one may have noticed, without any further constraints on the concept of contexts, the top 3 bound morphemes with the highest contextual diversity will be '-d', '-e' and '-t', which do not comply with our understanding of functional morphemes in English.
for acquiring inflectional or derivational suffix/prefixes, we want to compute contextual diversity of bound morphemes according to properly justified contextual relations only, instead of from all arbitrary divisions of words.