At the time of dematerialisation of securities, the securities shall be credited to the account of the holders only if the pattern of holding as per the security certificate(s) submitted for dematerialisation or the names of the applicants in the case of any public or rights issue of securities matches with the pattern of holding as per the account maintained with the Participant to which it is credited. Provided however that, in case of transposition and dematerialisation of securities, the securities held by A B and C can be dematerialised in an account opened in the combination of A C & B, B C & A, B A & C, C A & B and C B & A.