Mit & ohne Tippfehler:

ck 21, d 21, d k21, d+k 21, ddk 21, dg 21, di 21, dj 21, dk 1, dk 11, dk 12, dk 2, dk 211, dk 22, dk 221, dk 2q, dk 2w, dk 31, dk e1, dk q1, dk w1, dk2 1, dkk 21, dl 21, dm 21, do 21, du 21, ek 21, fk 21, k 21, kd 21, rk 21, sk 21, tk 21, vk 21, wk 21, xk 21