ESC 1 2 3 4 5 6 7 8 9 0 MINUS EQUAL BSPC DEL RC ( 2 , 0 ) RC ( 1 , 0 ) RC ( 0 , 0 ) RC ( 1 , 1 ) RC ( 0 , 1 ) RC ( 1 , 2 ) RC ( 0 , 2 ) RC ( 1 , 3 ) RC ( 0 , 3 ) RC ( 1 , 4 )