Structure : I-I-I-I | IV-IV-I-I | V7-V7-I-I
Structure : I7-I7-I7-I7 | IV7-IV7-I7-I7 | V7-V7-I7-I7
Structure : I-IV7-I-I7 | IV-IV7-I-I7 | V7-IV7-I-V7
Structure : I_v2-IV7_v2-I_v2-I7 | IV-IV7-I-I7 | V7_v2-IV7-I-V7