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1     I|    banks the prince of rivers, Po,~Doth overswell, he breaks
2    IX|        sandy valleys, tumbleth Po,~Whose streams the further
3    XI| Erotimus, born on the banks of Po,~Was he that undertook to
4  XIII|        the scorched sands,~Nor Po in May when o'er his banks
5   XIV|   Ganges, Indus, Volga, Ister, Po,~Whence Euphrates, whence
6  XVII|      leapt,~And in the vale of Po built for his seat~Of many
7 XVIII|  impure, thy spirit stain;~Not Po, not Ganges, not seven-mouthed