groups.json

{
  "1": ["БМТМ-25-1","БМТМ-25-2","БМТМ-25-3","БНТМ-25-1","БНТМ-25-2","БФЗ-25-1","БЭН-25-1","БЭН-25-2"],
  "2": ["БМТМ-24-4-1","БМТМ-24-4-2","БМТМ-24-4-3","БМТМ-24-6-1","БМТМ-24-6-2","БМТМ-24-6-3","БНМ-24-1","БНМТ-24-1","БФЗ-24-1","БЭН-24-4-1","БЭН-24-4-2","БЭН-24-6-1","БЭН-24-6-2"],
  "3": ["БМТМ-23-6-МФ-1","БМТМ-23-6-ФФ-1","БМТМ-23-6-ФХ-2","БНМ-23-НН-1","БНМ-23-ФН-1","БНМТ-23-НТ-1","БНМТ-23-ПС-1","БФЗ-23-КТ-1","БФЗ-23-ФКС-1","БЭН-23-4-МЭ-1","БЭН-23-4-ОП-1","БЭН-23-4-ПЭ-1","БЭН-23-4-ТЭ-1","БЭН-23-6-ММ-1","БЭН-23-6-ПП-1"],
  "4": ["БМТМ-22-ИМ-1","БМТМ-22-ОМ-1","БМТМ-22-ФМ-1","БМТМ-22-ФХ-1","БНМ-22-НН-1","БНМ-22-ФН-1","БНМТ-22-НТ-1","БНМТ-22-ПС-1","БФЗ-22-КТ-1","БФЗ-22-ФКС-1","БЭН-22-МЭ-1","БЭН-22-ОП-1","БЭН-22-ПЭ-1","БЭН-22-ТЭ-1"]
}