Tirada iyo Qalabka Cutubka
Tirada jirka Tirada waa wax kasta oo si toos ah ama si dadban loo cabbiri karo, natiijooyinka cabbiraaddana waxaa lagu muujiyaa tirooyin iyo cutubyo. Dhererka iyo cufnaanta waa tusaalooyin tirooyin jireed oo si toos ah loo cabbiri karo. Tusaale ahaan tiro jireed oo si dadban loo cabbiri karo waa mugga. Haddii aad rabto inaad hesho mugga qubeyska musqushaada, marka hore cabbir dhererka, ballaca, iyo dhererka qubeyska adoo isticmaalaya cabbir cajalad ama ruler. Kadib, ku dhufo dhererka, ballaca, iyo dhererka si aad u hesho mugga qubeyska.