There were also NUMBER@1 of the near-identical but higher-geared Class NUMBER@2 , and NUMBER@3 similar locomotives fitted with different engines and transmissions -LRB- some of which became Class NUMBER@4 -RRB- , which together brought the total number of outwardly-similar machines to NUMBER@5 .

There were also NUMBER@1 of the near-identical but higher geared Class NUMBER@2 , and NUMBER@3 similar locomotives fitted with different engines and transmissions -LRB- some of which became Class NUMBER@4 -RRB- , which together brought the total number of outwardly-similar machines to NUMBER@5 .
