(a) Moving a 6 from last digit to first changes from base 10 to a smaller base

(b) Moving a 3 from first digit to last changes from base 10 to a smaller base

(c) Moving a 2 from last digit to first changes from base 10 to a larger base

(d) Moving an 8 from first digit to last changes from base 10 to a larger base

Note: The new base may be different for each of (a) to (d)