Question

i am a 9 letters word.
if u have 123 u will have 1234
2 and 7 are same
3 and 8 are same
5 and 9 are same
8 and 9 are used to express location and time
5 and 6 is a disease
find who am I ???????

Answer 1

Hmm............

Hm..........................


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