School girl Dominika C in Irish 8 cuffs

Poor Dominika C, she has been tightly cuffed in a pair of lady size Irish 8 cuffs. Her beautiful hands are held cruelly together at the wrists, and these cuffs are heavy as well. Dominika has been told she will get out of the cuffs after she has written a certain text on the blackboard. She has her doubts: how would writing on the blackboard unlock her cuffs? She decides to try it anyway, there is no choice!