For an activity on phonology I needed an example of a phoneme sequence that would complete the whole set /s/ /t/ /r/ /st/ /tr/ and /str/. I could think of loads that completed 5 out of 6, but the only ones I could come up with for all six was /ʌk/ - making : suck, tuck, ruck, stuck, truck and struck, and /ɒl/ - soul, toll roll, stole, troll, stroll. There's also /eɪt/, (giving sate, Tate, rate, state, trait, straight) but I wanted to avoid proper names.
Can anyone think of any others?