The fifth strong conjugation comprises verbs whose roots end in a single non-resonant consonant (i.e. not l,r,m,n).  The resulting ablaut pattern characterizing the fifth strong conjugation thus becomes the following.

Class V Ablaut Pattern

The difference between classes Va and Vb lies in the vowel of the present stem and the past participle. The change is conditioned by the consonant following the vowel. Generally the vowel i occurs, but this is replaced by ai [E] when followed by h or ƕ. Hence giba, but saiƕa.

The verb sniwan 'hasten' belongs to the class Va, with final root consonant w. When this becomes word-final, the w shifts to u (i.e. aw becomes áu). The verb bidjan 'pray' conjugates according to the pattern of class Va, but the j-augment remains only in the forms built from the present stem. The verb fraihnan 'inquire' conjugates according to the pattern of class Vb, but the n-suffix remains only in the forms built from the present stem. The principal parts of these verbs are as follows.

The verb giban 'give', with prinicpal parts giba -- gaf -- gebum -- gibans, serves to illustrate the forms of the fifth conjugation. The forms are as follows.

See the sound changes page for consonant changes before the second person singular past indicative ending.

The link below has other illustrations of this conjugation.

http://www.utexas.edu/cola/centers/lrc/eieol/gotol-7-X.html#Got07_GP31