The constellation is the constellation, and the blood type is the blood type.
There are twelve constellations in the constellation:
Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, Pisces.
There are three blood types: A, B, O and AB.
Everyone has a constellation and a blood type.
There is no connection between the two.