The /ŋ/ sound is spelled with <ng>. The /l/ sound is spelled with <l> or <ll>.
This is a contrast between a velar nasal continuant and an alveolar lateral continuant, both voiced and only occurring in syllable-final position or in syllable-closing clusters. It is not a problem except slightly for Thai learners who generally have problems with final /l/ sounds.
Interesting pairs include:
The mean density value is low at 0.3%. The lists make 33 semantic distinctions, a loading of 55%.
bring brill bunk bulk bunked bulked bunking bulking bunks bulks dung dull gang gal gangs gals hang Hal Havering Haverhill hung hull hunk hulk hunks hulks Inc ilk ink ilk king kill kings kills long loll longed lolled longing lolling longs lolls lung lull lungs lulls mink milk minks milks pang pal pangs pals ping pill pings pills reefing refill ring rill rings rills sang Sal sing sill sings sills singable syllable sink silk sinks silks skunk skulk skunks skulks song Sol sting still stinging stilling stings stills stinger stiller sunk sulk swing swill swinging swilling swings swills tangy tally tank talc ting till tinged tilled tinging tilling tings tills weaving weevil wing will winged willed winging willing wings wills
John Higgins, Shaftesbury, December 2010.