i-i-O- s---- P-s-P- O-i---- i-i-s- P---- i-O-P- s---- i-i-O- s---- P-s-P- O-i---- i-i-s- P---- i-O-Y- i---- s-s-D- g---- D-g-D- s-D---- s-s-D- g---- D-s-P- s---- i-i-O- s---- P-s-P- O-i---- i-i-s- P---- s-i-P-Y- s