(d)Detention. [The words in italics are to be entered in the margin.]-To undergo detention for ................................years [months or days] [Terms of imprisonment or detention for any period not amounting to one month (i.e., a calendar month) will be awarded in days; for any period of one year or more years will be awarded in years; and in any other case, will be awarded in months, or if required, in months and days.]