BARCELONA Alejandro Martínez Singul, will be leaving the prison, where he has spent the last three years, tomorrow. He had been sentenced to, and has completed, three years after being found guilty of the attempted rape of a 12-year-old girl. He was previously sentenced to 65 years for 10 rapes, for which he paid the maximum time of 16 years. He has never been allowed out because of fears that he would reoffend due to his uncontrollable sexual desire. However, he has been taking part voluntarily in a programme that includes the use of chemicals that inhibit sexual desire, as well as intensive psycho- therapy.