[re-+[dark+-en]+-able]]

Staring a deep view on the complex word "redarkenable" can be defined morphologically as following. The base is "dark" and it is a noun while there are three affixes which are "re-", "-en", "-able" in the complex word. The hierarchical structure demands to attach the affix "-en" firstly to the base since it can be derived "dark+-en" so that making a verb. Then the affix "-able" can be attached in order to deriving an adjective from verb. In this situation the affix "re-" should be attached lastly so that obeying morphemes linear order within complex words

1.a. redarkenable- [dark+-en]->[dark+-en]+-able]]->[re-+[dark+-en]+-able]]

Taking morhological rules into consideration the word "mispronounceable" illustrates that base of this word is verb which is"pronounce" and it requires the affix "-able" to be attached to the base first like "pronounce+-able". Because according to the strict systematic linear order of the morphemes within complex words the affix "miss-" is assumed to be added at the last as "miss+pronounce+-able".

1.b.mispronounceable- [pronounce+-able]->[mis-+[pronounce+-able]]