group_A: 1_AA	2_AA	3_AA
group_B: 1_BB	2_BB	3_BB
group_C: 1_CC	2_CC	3_CC
group_D: 1_DD
group_E: 1_EE
group_F: 1_FF
group_G: 1_GG	2_GG	3_GG
group_H: 1_HH	2_HH	3_HH