It can be seen as Hydrogen, Carbon and Silicon series combined, with an emphasis on the Silicon series. It is the full development of the theme of the Lilianae, the Monocots.
They want to make contact, have friends and a partner. It is the age of puberty where friends become more important than parents and relatives. Getting a boyfriend or girlfriend is the most important issue at that stage of life. They like to go out, meet new people, go dancing, listen to music and have fun.
They do not know if their relationships will work out well.
They do not know if their love relationships and friendships are possible.
In adults, when they have stuck in the mental age of puberty and have not been able to overcome and mature this phase. The act and behave as adolescents.