teach code

in orse ode 1

in orse ode 2

in orse ode 3

in orse ode 4

in orse ode 5

in orse ode 7

in orse ode 8

in orse ode 9

in orse ode 10

in orse ode 11

in orse ode 12

in orse ode 13

in orse ode 14

in orse ode 15

in orse ode 16

in orse ode 17

in orse ode 18

in orse ode 19

in orse ode 20

in orse ode 22

in orse ode 23

in orse ode 24

in orse ode 25