i know a song called '12 apostles' taught to me by James Fagan and Nancy Kerr and it is kind of the same going...

a)Come and i will sing you
b)what will you sing me
a)i will sing you one-o (number changing obv.)
b)what is your one-o   (number changing obv.)

one is one and all along and ever more shall be so
two is for the lily white babes covered all in green-o
three of them are strangers
four for the gospel makers
five for the symbol at your door
six for the charming waters
seven for the seven stars in the sky
eight for the eight bold rangers
nine for the nine bright shiners
ten for the ten commandments
eleven maidens all in a dance
twelve for the twelve apostles

then on every even number from four each time a voice going... come sing *hey hey* what will you sing?