a⃗ =
i⃗ +
j⃗ ;

b⃗ =
i⃗ +
j⃗ ;

c⃗ =
i⃗ +
j⃗ ;

d⃗ =
i⃗ +
j⃗ ;

e⃗ =
i⃗ +
j⃗ ;

f⃗ =
i⃗ +
j⃗ ;

g⃗ =
i⃗ +
j⃗ ;

h⃗ =
i⃗ +
j⃗ ;

k⃗ =
i⃗ +
j⃗ .