5 8 10 9 2 July 8, 2019 16 32 64 128 5 ethylidene 8 9 10 trinorborn 2 ene 5 8 times 9 10 times 2 5 7 8 minus 2 9 10 5 9 3 x 2 10 8 9 8 9 10 2m 3 5 9 8 2 x 5 2 10 7 2 x 8 5 9 10 Suite logique 5 2 10 8 9