Age distribution (derived using the BONNSAI tool) for members of different clusters analyzed in this work: Trumpler 14 (Villafranca O- 002 group, in blue), Trumpler 16 W (Villafranca O-003, in orange), Trumpler 16 E (Villafranca O-025, in green), Trumpler 15 (Villafranca O-027, in red), Collinder 228 (Villafranca O-028, in purple), Collinder 232 (Villafranca O-029, in brown), and Bochum 11 (Villafranca O-030, in pink). Those stars just falling in the gaps between defined groups are simply indicated as Car OB1 members (in gray). Black stars indicate stars stars rotating at v sin i > 200 km s⁻¹.