Counting in BASE 5...

SEE:              SAY:          THINK:
  0 (base 5)      zero                                   (0 ones)
  1 (base 5)      one                                    (1 one)
  2 (base 5)      two                                    (2 ones)
  3 (base 5)      three                                  (3 ones)
  4 (base 5)      four                                   (4 ones)

 10 (base 5)      five                          (1 five,  0 ones)
 11 (base 5)      six                           (1 five,  1 one) 
 12 (base 5)      seven                         (1 five,  2 ones)
 13 (base 5)      eight                         (1 five,  3 ones)
 14 (base 5)      nine                          (1 five,  4 ones)

 20 (base 5)      ten                           (2 fives, 0 ones)
 21 (base 5)      eleven                        (2 fives, 1 one)
 22 (base 5)      twelve                        (2 fives, 2 ones)
 23 (base 5)      thirteen                      (2 fives, 3 ones)
 24 (base 5)      fourteen                      (2 fives, 4 ones)

 30 (base 5)      fifteen                       (3 fives, 0 ones)
 31 (base 5)      sixteen                       (3 fives, 1 one)
 32 (base 5)      seventeen                     (3 fives, 2 ones)
 33 (base 5)      eighteen                      (3 fives, 3 ones)
 34 (base 5)      nineteen                      (3 fives, 4 ones)

 40 (base 5)      twenty                        (4 fives, 0 ones)
 41 (base 5)      twenty-one                    (4 fives, 1 one)
 42 (base 5)      twenty-two                    (4 fives, 2 ones)
 43 (base 5)      twenty-three                  (4 fives, 3 ones)
 44 (base 5)      twenty-four                   (4 fives, 4 ones)

100 (base 5)      twenty-five   (1 twenty-five,  0 fives, 0 ones)
101 (base 5)      twenty-six    (1 twenty-five,  0 fives, 1 one)
102 (base 5)      twenty-seven  (1 twenty-five,  0 fives, 2 ones)
103 (base 5)      twenty-eight  (1 twenty-five,  0 fives, 3 ones)
104 (base 5)      twenty-nine   (1 twenty-five,  0 fives, 4 ones)

110 (base 5)      thirty        (1 twenty-five,  1 five,  0 ones)
111 (base 5)      thirty-one    (1 twenty-five,  1 five,  1 one)
112 (base 5)      thirty-two    (1 twenty-five,  1 five,  2 ones)