Validation of text Fields in CRM form

Hi All,

I have created few text type fields in CRM form. I want to validate the fields in below  formats and restrict users to enter other characters and special charcters  without showing any alert message on front or showing any customization on front end of CRM.

Number1:: format1: 12/456/4589 or format2: 124564589 (9 digit)

Number2:: format1: 1235789654 (10digit)

Number3:: format1: 4689823113 (10digit)

Number4:: format1: 8486465464 (10digit)

Numbre5:: format1: 45464656455645645646646 (20 digit)

Number6:: format1: 8748454568 (10digit)

Number7:: format1: 132/457/7890 or format2: 1288888722 (10 digit)

Please help.