Universal 390: aspirated consonant precedes an unstressed vowel ⇒ aspir. consonant precedes a secondary stressed vowel ⇒ aspirated consonant precedes a primary stressed vowel;
Original
Aspirated consonants occur more often preceding a primary stressed vowel than a secondary one and occur more frequently preceding a secondary stressed vowel than an unstressed one.
Standardized
IF an aspirated consonant occurs preceding an unstressed vowel, THEN it also occurs preceding a secondary stressed vowel. IF an aspirated consonant occurs preceding a secondary stressed vowel, THEN it also occurs preceding a primary stressed one.
Good examples: English , Georgian (S. Caucasian) (Hurch 1988).However, crosslinguistic frequency need not perforce translate into an implication.