Literal question
224. CHECK 215 AND ENTER THE NUMBER OF BIRTHS IN 1997 OR LATER. IF NONE, RECORD '0'.
225. FOR EACH BIRTH SINCE JANUARY 1997, ENTER 'B' IN THE MONTH OF BIRTH IN COLUMN 1 OF THE CALENDAR, FOR EACH BIRTH, ASK THE NUMBER OF MONTHS THE PREGNANCY LASTED AND RECORD 'P' IN EACH OF THE PRECEDING MONTHS ACCORDING TO THE DURATION OF THE PREGNANCY. (NOTE: THE NUMBER OF 'P's MUST BE ONE LESS THAN THE NUMBER OF MONTHS THAT THE PREGNANCY LASTED.) WRITE THE NAME OF THE CHILD TO THE LEFT OF THE 'B' CODE.