<Tr> <Td> Deutsche Eishockey Liga </Td> <Td> Germany </Td> <Td> </Td> <Td> 6198 </Td> </Tr> <Tr> <Td> Kontinental Hockey League </Td> <Td> Russia (22 teams) Belarus (1 team) China (1 team) Finland (1 team) Kazakhstan (1 team) Latvia (1 team) Slovakia (1 team) </Td> <Td> Successor to Russian Superleague and Soviet Championship League </Td> <Td> 6121 </Td> </Tr> <Tr> <Td> American Hockey League </Td> <Td> United States (26 teams) Canada (4 teams) </Td> <Td> Developmental League for NHL 31 teams in 2018--19 with one ECHL team moving to the AHL </Td> <Td> 5865 </Td> </Tr> <Tr> <Td> Swedish Hockey League </Td> <Td> Sweden </Td> <Td> Known as Elitserien until 2013 </Td> <Td> 5707 </Td> </Tr>

How long is each period in ice hockey