Present Simple
I/you/we/they travel, he/she/it travels
I/you/we/they come, he/she/it comes
Present Continuous
I am travelling, he/she/it is travelling, you/we/they are travelling
I am coming, he/she/it is coming, you/we/they are coming
Present Perfect
I/you/we/they have traveled, he/she/it has traveled
I/you/we/they have come, he/she/it has come