R-Controlled Vowel (ar, or, oar, ore)

Which r-controlled vowel pattern matches the word:

garden

Which r-controlled vowel pattern matches the word:

barn

Which r-controlled vowel pattern matches the word:

market

Which r-controlled vowel pattern matches the word:

shark

Which r-controlled vowel pattern matches the word:

stars

Which r-controlled vowel pattern matches the word:

porch

Which r-controlled vowel pattern matches the word:

acorn

Which r-controlled vowel pattern matches the word:

export

Which r-controlled vowel pattern matches the word:

horse

Which r-controlled vowel pattern matches the word:

orbit