Breton swear words beginning with the letter K

Phrase Meaning Is This Accurate?
Kac'h Shit (50%)      (50%)
Karc'hat To shit (75%)      (25%)
Kerzh da garc'hat Get lost (80%)      (20%)

Breton Swear Words by Letter:
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z