Oracle - Create check constraint

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Oracle

I need to create a table with two columns having check constraint that Col2 value should be based on the values of Col1. I would like to mention this as below :

if Col1 value is 'A'
then Col2 value should be between 10 and 20

if Col1 value is 'B'
then Col2 value should be between 20 and 30

I know, we can achieve this using triggers. Can we achieve this by declaring a check constraint at table level.

Thank you in advance.