its2an hts2a gts2 fts2an ets2a

t2r2a s2r2 r2r2an q2r2a p2r2

4br2 3br2an 2br2a 1br2 0br2an

flq2an elq2a dlq2 clq2an blq2a

qup2a pup2 oup2an nup2a mup2