Tunnel design for FRR

Hi,
first, I can't speak english very well, but, I need your help. please, some help.
I want to design for mpls backbone by Cat6509 and 10G module. following bellow
SW1 ---- SW2 ------ SW3
|........................................|
SW4----------------------SW5
I something confused that is to use FRR. how tunnel to use in this design?
for example, i think SW1 primary connection is SW2, and backup tunnel is SW1 -SW4 - SW5 - SW3 - SW2 and SW2 is primary connection is SW3, and backup tunnel is SW2 - SW3 - SW4 - SW5 - SW1 - SW2. Is this right?
if between SW1 and SW4 connection failed because fiber cut, then, Will SW2 guaranted SW4 connection?

If the primary connection between SW1 and SW4 fails because of a Fibre cut, the fibre connection from SW2 to SW4 will be intact and will work fine. Since the connectivity between SW1 and SW4 is independant of the connectivity between SW2 and SW4 there will be no loss of connectivity between SW2 and SW4.

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