Candlestick trading also be used on indices and commodities

Candlestick trading also be used on  indices and commodities

reader’s message
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Hi Long all the information you give out on using candlesticks on forex.
can it also be used on indices and commodities.
kind regards
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of course
this is UK index daily chart
black black white white double block candlestick pattern
this pattern indicate price go lowr

here is engulfing candlestick
this means trend end soon
also here is 2 bar engulfing.
this pattern indicate that trend change and price go up

here is also
gold usd daily chart
black black white white indicate price go down
and
white white black black shows price go up

here is also
black black white white so price go down
we are using candlesticks on forex.
can it also be used on indices and commodities.
any market