Align items by first line of the middle block, nested!

one
one
two
three
one
two
one
two
three
one
one
two
three
one
two
one
two
three
four
one
one
two
three
one
two
one
two
three
one
one
one
two
three
one
two
one
two
three
one
one
two
three
one
two
one
two
three
four
one
two
one
one
two
one
one
two
three
one
one
two
one
one
two
three
one
two
one
two
three
four
one
two
one
one
two
one
one
two
three
one
one
two
one
one
two
three
one
one
two
one
one
two
three
one
one
two
one
one
two
three