Sentence:  And the more complex the morphophonemic system is in relation to the phonemic base , the less easily a phonemic system will be analysed without close attention to the morphophonemics - <WSD>at</WSD> least , the less satisfying will a phonemic statement be if it cannot be related through morphophonemic rules to grammatically meaningful structures . 
Meaning of the word marked with <WSD> tags:  if nothing else (`leastwise' is informal and `leastways' is colloquial)