(7)The forms of bills used for payments in connection with lump sum contracts are T.C. Forms 55 and 56 of the Bihar Treasury Code. The State Governments may modify these, in consultation with the Accountant General in order to provide for any additional precautions that be deemed necessary (See Rules 419 and 420 of the Bihar Treasury Code.)Note. - The Form of final bill may be printed on yellow paper to distinguish it from that of the running bill [See note 2 under Rule 275 (b)].D - Subsidiary Works Accounts.