Can any one please help me under this? I need to know which option indicates that 3 goes after 5and between 7,12and 5 then how that goes before 12 and between7 and 3. I’ve been reading this forever and I don’t understand her wording. Help please! Ayuda porfavor!

Can any one please help me under this I need to know which option indicates that 3 goes after 5and between 712and 5 then how that goes before 12 and between7 an class=