abba[8], baba[8], bada[7], bard[7], drab[7], berd[7], debr[7], arab[6], arba[6], bara[6], raba[6], bera[6], rabe[6], rada[5], dera[5], rade[5], reda[5],
bab[7], bad[6], dba[6], arb[5], bar[5], rab[5], ber[5], erb[5], reb[5], dar[4], rad[4], der[4], red[4], ara[3], era[3], rea[3],
ba[4], be[4], ad[3], da[3], de[3], aa[2], ar[2], er[2], re[2],
