Tim passed away in 2021. Susan started receiving CPP Disability Pension in 2021, amount received during the year was $25000. She also received $2500 as death benefit due to her father's death. Before going on disability she earned $55000 from work. On her T4 slip, there is $5000 pension Adjustment. She has $2000 unused RRSP contribution to be carried forward to future year(s). Her RRSP contribution limit at the end of 2020 is zero. How much maximum can she further contribute, that will allow her deduct fully in 2021?