<P> The Mayan numeral system was the system to represent numbers and calendar dates in the Maya civilization . It was a vigesimal (base - 20) positional numeral system . The numerals are made up of three symbols; zero (shell shape, with the plastron uppermost), one (a dot) and five (a bar). For example, thirteen is written as three dots in a horizontal row above two horizontal bars; sometimes it is also written as three vertical dots to the left of two vertical bars . With these three symbols each of the twenty vigesimal digits could be written . </P> <Table> <Tr> <Td> 400s </Td> <Td> </Td> <Td> <P> </P> </Td> <Td> <P> </P> </Td> </Tr> <Tr> <Td> 20s </Td> <Td> <P> </P> </Td> <Td> <P> </P> </Td> <Td> <P> </P> </Td> </Tr> <Tr> <Td> 1s </Td> <Td> <P> </P> </Td> <Td> <P> </P> </Td> <Td> <P> </P> </Td> </Tr> <Tr> <Td> </Td> <Td> 33 </Td> <Td> 429 </Td> <Td> 5125 </Td> </Tr> </Table>

What are the three symbols for 1 2 and 3 in the mayan number system
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