5-5. い-adjectives

5.5.1 Dictionary form

Most of い-adjectives end with a falling pitch.

white

fun

busy

red

brown

Addition to the polite ending です(desu) does not chang patterns. です(desu) is pronounced L-L. 

white

red

busy

There are two accent patterns when an adjective modifies a noun.  

white bag

red bag

5.5.2 Past tense form

かった(katta) is always pronounced L-L-L.

*English speakers tend to pronounce かった with H-L-L pattern. The tip is to pronounce the ”か” with a lower pitch.

red

fun

busy

kind, easy

white (LHLLL)
white fun (HLLLL)