Feem ntau ntawm qhov no tshwm sim vim qhov kub kub kub kub yog siab dhau los lossis kub siab kub nyhiab siab dhau heev lawm los yog kub ceev stamping yog qeeb heev. Qhov kub ntawm lub phom kub yuav tsum tau txo qis dua, qhov siab yuav tsum raug txo kom tsawg dua, thiab qhov kub ceev yuav tsum tau kho kom haum. Tsis tas li ntawd xwb, nws yuav tsum txo cov tsheb npav thiab txo qhov chaw nres tsheb, vim lub tsheb thiab chaw nres tsheb yuav ua rau kub kub kub dua.
