"SAW" and "PBUH" represent the Arabic phrase salla Allah alaihi wa sallam, meaning "may Allah's peace and blessings be upon him." It is a standard Muslim expression of love and respect for the Prophet.
I assume you mean 'SWT' which is mentioned after Allaah?
SWT - Subhaanahu wa ta'ala - Glorious and exalted is he..- God Allmighty.
SAW/SAWS- Sallaahu 'Alaayhi wa sallam - May God's blessing be unto him..meaning the Prophet Muhammad (May the peace and blessings of Allaah be unto him)..
SAW = Salallaahu 'Alayhi Wassalam, which means "May Allah bless him and grant him peace", this follows after prophet Muhammad. Sometimes also abbreviated as SAAW or SAAS
SWT = Subbhanahu Wa Ta'ala, which means "glorified and exalted be He", this follows after Allah SWT.
I think you mean s.a.w(Salla 'llah 'alayhi wa sallam | May God exalt and bring peace upon him) or swt(Subhanahu wa-ta'ala | glorified and exalted be He)