9b7gxx 8b7gx 7b7g 6b7gxx 5b7gx
kl6gx jl6g il6gxx hl6gx gl6g
vu5g uu5gxx tu5gx su5g ru5gxx
634gxx 534gx 434g 334gxx 234gx
hd4gx gd4g fd4gxx ed4gx dd4g