t-y u i o p a s-a p o i u y t---- o- p a s d f G h-G f d s a p o---- y- u I o p a S d-S a p o I u y---- p- a S d f G H j-H G f d S a p---- u- I O p a S D f-D S a p O I u---- a- S D f G H J k-J H G f D S a---- I- O P a S D g G-g D S a P O I