--> Collagenous has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings co & agenous which should not be misspelled with single 'L'
Wrong Spelling:  co-l-agenous 
Correct Spelling:  co-ll-agenous 
Check more misspelled words of Collagenous to spell it correct.