2a7


1 1.1 2ac1 2c1 2ahc1 2ahc2 2hc1 2ahc3 2ac2 2c2 2ac2.1 2a1 2t1 2ac3 2c3 2a2 2aaA1 2aA1 2a3 2a4 2a5 2a6 2a7 2a8 2a9 2a10 2a11 3