The second line:
A withered trunk bursts with fresh vetch.
An old man takes a wife. Nothing but gain.
The third line:
A weak beam.
Misfortune.
The fifth line:
Withered wood blooms with flowers.
An old woman takes a husband.
Neither fault nor praise.
The sixth line:
Fording, wading, head submerged.
Misfortune, but without fault.