In a city, a bank was stolen. The police arrested six major suspects No.1, 2, 3, 4, 5, and 6. After interrogation, Which of the following facts were found: No.1 There were only two of the three, No.5, No.6, and at least one of No.1 and No.2 committed crimes. Both of No.2 and No.3 committed crimes, or none of them. Only one person committed the crime, and only one of the three persons committed the crime. Based on this, the total number of criminals who can be launched is. ['.', '.', '.', '.']