pgp4 qgp4b rgp4br sgp4 tgp4b

e7p4b f7p4br g7p4 h7p4b i7p4br

3xq4br 4xq4 5xq4b 6xq4br 7xq4

sor4 tor4b uor4br vor4 wor4b

hfs4b ifs4br jfs4 kfs4b lfs4br