VO

YPW
Yaw()
`YawE؁`

˂WO
˓cԌ
`ځ`
˓cs

PS
w(k)
`k˓cw`
nw()

WQ
w
`
˓cԌ

WR
w(k)
`
˓cԌ

YOT
Yaw()
`YawEځ`
w

YOU
Yaw()
`Yaw`