Kootaakseen
Kootaakseen is a Finnish verbal form that expresses purpose. It is the third infinitive active form of the verb koota, meaning to gather or assemble. The form is built from the stem koota- plus the suffix -akseen, producing kootaakseen. As a non-finite form, it does not conjugate for person or tense and is used with other verbs to indicate the aim of an action.
In usage, kootaakseen typically appears in subordinate clauses and roughly translates as “in order to gather”
The form is non-finite and can combine with possessive suffixes when the infinitive acts as a complement
See also: Finnish grammar, infinitives in Finnish, the -akseen suffix, non-finite verb forms.