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sheep
sheep
pigs
pig
How many cows do they have? How many horses do they have? How many sheep do they have? How many pigs do they have?
thir
teen
=
four
teen
=
fif
teen
=
six
teen
=
thir
teen
=
four
teen
=
fif
teen
=
six
teen
=
数字十几的表达方式