He was happy, but she was sad.
She was smart, but he was stupid.
He was tall, but she was small.
She was backward, but he was forward.
He was thin, but she was fat.
His shirt was new, but her was old.
She was poor, but he was rich.
She was beautiful, but he was ugly.
She was clean, but he was dirty.
Her clocks were cheap, but his were expensive.