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Missing blocks of two designs in Hanani’s paper

In a classical paper “On Some Tactical Configurations”, Hanani proved that the necessary conditions are sufficient for the existence of 3(v, 4, λ) design for every λ. There he defined and constructed several configurations to help solve the general problem. One such design of a configuration is Q′′ 6 [4, 1, 18]. Unfortunately: He gave only 108 blocks out of the required 189 blocks. Similarly he constructed a Q′′ 3 [4, 4, 15] and did not list 90 blocks. Main aim of the present note is to provide the missing 81 and 90 blocks in respective designs and to generalize a construction to obtain Q′′ 3t[4, 2λ, 15t] for all positive integers λ, t.