keru[7], reku[7], weku[7], kurw[7], eruw[6], krew[5], werk[5], werw[4],
kur[6], rur[5], ker[4], rek[4], wek[4], rew[3], wre[3], wrr[3],
ku[5], wu[4], er[2], re[2], ew[2], we[2],