<sl> is two sounds. "s" and "l".
slop
slob
slab
slip
slug
slim
slap
Each of those words has 4 sounds.
There are no words in the English language that end with the letters SL.
asleepenslavemislaymislead
There are no words that start with sl that rhyme with match.
No, the word "six" does not have the short "i" sound. The sound in "six" is more like the "ih" sound.
Three such words are isle, island, misled.
Alliteration mean repition of consonant sound in beginning of words in a sentence. Six is word not a sentence.
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern --SL-P. That is, six letter words with 3rd letter S and 4th letter L and 6th letter P. In alphabetical order, they are: oxslip
The word "onomatopoeia" has six syllables. Onomatopoeia is a literary device in which a word is a phonetic imitation of a sound.
sled,slow,slide,steep.
No. It has a short I sound. It rhymes with fix, bricks, and sticks.
Yes. Mix has a short i sound (ih) as in the rhyming words fix, nix, and six. The X itself has a -ks sound, which typically appears in words ending in -cks (hicks, nicks, picks, ticks).
SL is a living language like all others. Just as there are new words entering/exiting english regularly, I am certain that the same is true in SL.