AAPKA DICTIONARY NO FURTHER A MYSTERY

There isn't any nominal pairs for tense/lax pairs such as /ʊ/ and /u/ in unstressed syllables, as they are in complementary distribution. They aren't definitely diverse phonemes.I do think You will find a rule (with exceptions, certainly) about in the event the "ch" is throaty and when it is actually mouthy. Just after an "open up vowel" like "a"