Error, please use a valid command (valid commands: 'quit' 'info' 'vertices' 'nodes <City>' 'remove <firstCity>;<secondCity>' 'insert <firstCity>;<secondCity>;<distanceKilometer>;<distanceMinutes>' 'route <startCity>;<destinationCity>;<time|route|optimal|all>' 'search <startCity>;<destinationCity>;<time|route|optimal>'  [numbers can't be zero or less])
Error, please use a valid command (valid commands: 'quit' 'info' 'vertices' 'nodes <City>' 'remove <firstCity>;<secondCity>' 'insert <firstCity>;<secondCity>;<distanceKilometer>;<distanceMinutes>' 'route <startCity>;<destinationCity>;<time|route|optimal|all>' 'search <startCity>;<destinationCity>;<time|route|optimal>'  [numbers can't be zero or less])
Error, please use a valid command (valid commands: 'quit' 'info' 'vertices' 'nodes <City>' 'remove <firstCity>;<secondCity>' 'insert <firstCity>;<secondCity>;<distanceKilometer>;<distanceMinutes>' 'route <startCity>;<destinationCity>;<time|route|optimal|all>' 'search <startCity>;<destinationCity>;<time|route|optimal>'  [numbers can't be zero or less])
Error, vertex not found
Error, vertex not found
Error, vertex not found
Error, vertex not found
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Aa C bB
Aa d C bB
Aa C
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Aa bB C
Aa C
Aa d C
Aa C d
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Aa C d
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bB
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bB Aa
bB Aa
bB Aa
bB Aa
bB C Aa
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bB Aa C
bB Aa d C
bB C
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bB Aa C d
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bB Aa d
bB C Aa d
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C
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C Aa
C Aa
C Aa
C Aa
C bB Aa
C d Aa
C bB
C Aa bB
C bB
C Aa bB
C bB
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C bB Aa d
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